Definition of stegosaur noun from the Oxford Advanced American Dictionary

 

stegosaur

 noun
noun
NAmE//ˈstɛɡəˌsɔr//
 
(also stegosaurus
NAmE//ˌstɛɡəˈsɔrəs//
 
)
 
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a dinosaur with a small head, four legs, and two rows of spikes along its back
See the Oxford Advanced Learner's Dictionary entry: stegosaur